Knock determination using a variable averaging coefficient

Details Knock determination using a variable averaging coefficient Knock determination using a variable averaging coefficient

1996-06-28

1998-09-22

Dombroske, George M.

Measuring and testing

Test stand

For engine

73 3503, 73 3506, 73 3509, 36443108, 340439, G01M 1500, F02P 515

Patent

active

058116672

ABSTRACT:
To ensure both responsiveness and stability of a knock determination in which a knock sensor signal is compared with a knock determining reference computed from a background value, a difference between the knock sensor signal and the background value is determined through averaging by the use of the averaging coefficient. Based on the difference, the averaging coefficient n is varied so that the more latest sensor output signals are used in the background value determination as the difference becomes larger.

REFERENCES:
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patent: 5331848 (1994-07-01), Nakagawa et al.
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patent: 5515720 (1996-05-01), Remboski et al.
patent: 5539644 (1996-07-01), Ichikawa et al.
patent: 5542291 (1996-08-01), James

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